Train-stopping apparatus.



1. A. GRAY. f TRAIN STOPPING APPARATUSp APPHCATION FILED {ET-3,1914;

1,11%,697. I .PatentedJuhe 8,1915.

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JAMES A. deer, or NEW sonic, N. a.

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Specification of Letters patent.

Patent-ed int-ass, ieae.

Application filed October a, 1914. sem Nb. teaser.

' To all whom it may concern: v

ture of an improvementupon my previous Patent No. 1,117,034.

In carryim out the present invention, it

is my purpose to provide train stopping ap paratus which will be" speed controlled and whereby the propelling power of the motor car will be cut off and the brakes applied in the event of the car or train running by a danger signal above a predetermmed speed and whereby the propelling power of the car and the brake mechanism will be uninfluenced when the train is traveling below the prescribed speed limit so that the train may run into an occupied block'with cau-- tion.

lVith the above and other objects in View,

the invention consists in the construction,-

combination andarrangement of parts hereinafter set forth in and falling within. the scope of the appended claims. a

Y In the accompanying drawing; Figure 1 is view in elevation of a locomotive equipped with the present invention. Fig. 2 is a view in side elevation of the drums and gear wheel illustrated in Fig. 1. Fig. 3 is asectioial view showing a detail of the invention.

Referring now to the drawing in detail, A designates the cab end of-the boiler of a steam driven locomotive. Journaled in suitable horizontally alining bearings carried by a-bed plate 56 bolted to the head of the boiler within the engine cab is a shaft 55 and keyed upon the shaft 55' is a gear wheel 57 carrying upon one side a large drum 58 and a relatively small drum 59, while also mounted upon the shaft 55 is a loose pulley 60 and a fast pulley 61. Trained over the loose pulley and adapted to be throwir from' the-latter onto the fast pulley is a belt 62 adaptedto be driven from a pulley fast upon a countershaft 71 journaled in horizontally alining bearings and equipped with a sprocket wheel 72' over which and a sprocket Wheel keyed upon one of the axles of the lbcoinptiveis trained an endless chain. 7 Swhereby mot-i on is imparted to the countershaft 71. In this instance, the belt shipper lever indicated at 32 is connected through the medium of a Wire or other flexible element 63 with a tripping as.

vice carried by the locomotive and under the control of the railroad signals. The gear wheel 5'?" meshes with the teeth. of a rack bar 74-SQCUIGd' lJO the under side of a throttle valve-rod, while a chain 64 or other flexible element. has one end connected to and trained about the relatively large drum 58,'such chain leading to and is connected with a "alve located in the traindine air pipe and adapted, when opened, to bring about, in efi'ect, aservice application of the brakes, in contra-distinction to an emergency application. A second chain 66 or other flexible element has one terminal thereof connected to the drum 5 and is wrapped thereabout and has the free end thereof connected to the engineer s brake valve so asto effect anemergency applica-- tion of the brakes to the wheels. Thus, it will be seen that under all circumstances,

the brakes will be'applied in suchv manner as to reduce the wear and tear on the rolling a sudden emergency apship the belt from the loose pulley to the fast pulley, while the train is traveling below a' certain speed and is relieved of the influence of such holding means when the train is running above the prescribed speed. In the present instance, this speed controlled mechanism comprises a vertical shaft 75' connected with one of the aXles of the locomotive through suitable gearing andadapted to be rotated therefrom in the move ment of the car. Fixed to the upper end of the shaft 75 is a collar 76 and pivoted to the collar 76 at diametrically opposite points are arms 77 having the outer ends thereof equipped with weigh-ted balls 78 adapted to fly. outwardly under the action of centrifugal force under the action of the shaft 75.

Slidably mounted upon the shaft 75 below the fixed collar 76 is a collar 79 connected through the medium of links 80 with the arms 77 respectively. Connected with the collar 79 and depending therefrom is an arm 81 having the lower end thereof nor-- mally engaging a lug 82 on the shipper rod .32. As long as the locomotive is running below the predetermined speed, say, for instance, ten miles per hour, the lower end of the arm 81' remains in engagement with the lug 82, thereby holding the shipper rod 32 against-movement under the action of the tripping device when the latter is operated from the signal blade. \Vhem'however, the train exceeds the prescribed speed,

the balls 78 fly outwardly under the action of centrifugal force and so elevate the col- 'lar 79, thereby drawing the lower end of v the governor controlledarm 8 the arm 81 out of engagement with the lug 82 and permitting the shipper rod to operate when the tripping device is. actuated. In the present instance, the upper edge of the lug end of the shipper rod 32'is beveled as clearly illustrated in Fig. 3 so that when .the shipper rod is restored to normal position, succeeding the release of such rod by scribed and delineated, as modification and variation may be made within the scope of the claims without departing from the spirit of the invention.

I claim:

1. In train stopping apparatus, the combination with a shaft adapted for rotary movement, connections between said shaft and the throttle valve and engineers brake valve whereby the throttle valve will be losed and the brake valve actuated to effect an application of the brakes when the shaft is rotated, fast and loose pulleys on said shaft, a belt trained over said pulleys, a shipper rod for shifting the belt from I the loose pulley to the fast pulley to rotate the arm 81' I have shown the,

means? the shaft, and speed controlled means holding said shipper rod againstmovement while the train is traveling below a predetermined speed. i

2. In train stopping apparatus, the combination with a shaft adapted for rotary movement, connections between said shaft and the throttle valve and engineers'brake valve whereby the throttle valve will be closed and the brake valve actuated to .ef-

fect an application of the brakes when the shaft is rotated, fast and loose pulleys on said shaft, a belt 'trainedover said pulleys,

a shipper rod for shifting the belt from the loose pulley tothe fast pulley to rotate the shaft, a lug on said shipper rod, an arm normally engaging said lug and holding the shipper rod against movement, andspeed controlled means for relievingsaid lug of the influence of said arm when the train is traveling above a prescribed speed.

3.- In train stopping apparatus, the combination with, a shaft adapted for rotary movement, connections between said shaft and the throttle valve and engineers brake valve whereby the throttle valve will be closed and thebrake valve actuated to effect an application of the brakes when the shaft is rotated, fast and loose pulleys on said shaft, a belt trained over said pulleys, a

shipper rod for shifting the belt from the loose pulley to the. fast pulleyto rotate the shaft,--a lug on said shipper rod, an arm normally engaging said lug and holding the shipper rod against movement, and means responsive to the action of centrifugal force to relieve'said lug of the influence of said arm when the train is traveling above a predetermined speed.

4. In train stopping apparatus, the combination with a shaft adapted for rotary movement, connections between said shaft and a controlling element of the motor car, fast and loose pulleys on said shaft, a belt trained over said pulleys, a shipper rod for shifting the rod from the loose pulley to the fast pulley to rotate the shaft, and speed controlled means holding said shipper rod against movement while the train is travelin'g below a predetermined speed.

In testimony whereof I allix my signature in presence of two witnesses.

JAMES A. GRAY.

Witnesses:

JOHN H. CAHILL, C. WILBUR F once. 

